US 1834670 A
Description (OCR text may contain errors)
P. W. YETT ADJUSTMENT FOR PROPORTIONING- MACHINES s sheets-sheet 1 Filed Jan.
unlll In l l Il Dec. l, 1931. P, W, YET-|- ADJUSTMENT FOR PRoPoRTIoNING MACHINES Filed Jan'. 2l, 1950 3 Sheets-Sheet 2 P W. YETT ./q #TUR /v/ 1, 1931- P. w. YETT ADJUSTMENT FOR PROPORTIONING MACHINES` 5 Sheets-Sheet 3 Filed Jan.
PN. YETT /4 TTDRNE/ Patented Dec. 1, 1931 rr stares PORTER W. YETT, OF PORTLAND, OREGON ADJUSTMENT Fon rRoPoR'rIoNrNG MACHINES Application tiled January 21, 1930.r Serial No. 422,259.
This invention relates generally to vthe making of concrete, and particularly to an adjustment for the outlet of a proportioning machine for assembling the aggregates.
The main object of this invention is to 'provide' an adjustment rorthe outlet of a proportioning machine intended to'be used 'for charging portable lconcrete mixers in which the outlet is capable of lateral, longitudinal and vertical adjustment with rela'- tion to the horizontal axis of the mixing cylinder.
The second Objectis to make the proportioning machine readily adaptable to use with various heights of mixing cylinders, that is, the height of the axis above the ground, such variations being caused by different kinds of vehicles used for transporting the mixer, and also for varying diameters of mixing cylinders,which variations are caused by capacity requirements.
The third object is to provide-a novel form of charging spout especially adapted for the charging of mixing cylinders.
These, and other objects, will become more apparent from the specication following as illustrated in the accompanying drawings, in which:
Figure 1 is a vertical section through the device.
Figure 2 is a perspective View of the slidaf ble chute element.
Figure 3 is a perspective view of the tiltable chute element.
Figure 4 is a side elevation of the device showing certain of the supporting elements broken away in section.
Figure 5 is a section taken along the line 5-5 in Figure 1.
Figure 6 is a section taken along the line 6 6 in Figure 1.
Figure 7 is a plan.
Figure 8 is a section taken along the line 8-8 in Figure 4.
Figure 9 is a perspective view of the hopper outlet.
Similar numbers of reference refer to similar parts throughout the several views.
Attention is drawn to my copending application, Serial Number 364,654 for a portable proportioning machine, over which this device is an improvement.'
Reierring'in detail to the drawings, there is shown an` outer frame 10 preferably constructed of I beams and supportedin anyV convenient manner, either on a wheeled support or on stationary foundations. Within the frame 10 is al frame 11 of rectangular shape having on opposite sides thereof the wheels 12 which employ the I beams of the and also an intermediate compartment 21l within which is placed a sliding gate 22 provided with a rack 23 which meshes with a pinion 24 on the shaft 25, on whose outer end is secured a chain wheel 26around which passes the chain 27, a manual movementy of which causes the gate 22 to varyL the sizeof the outlet of the compartment 20 in which is stored the cement. Y
The compartment 19 contains the sand and has at the lower end thereof a hinged gate 23` which is operated by a cable 29 for the purpose of regulating thesand to secure the desired flow, regardless of its moisture content. Lateral movement is supplied to the hopper 15 by means of the hand wheel 30 on the shaft 31 which carries the drum 32 around which is wound the cable 33 whose opposite ends pass around the pulleys 34 and fastened, to the hopper 15. In other words, a'movement of the wheelv30to the `rightor left causes the hopper' 15 to move correspondingly.
The hopper 15 convergesk downwardly to form an inclined curved spout 35 on-each side of which is mounted an inclined angle bar 36 both of which are supported from the hopper 15 and are `parallel to each other forming aguide for the slidable chute 'element 37` on the sides of which are secured the angle'bars 38 provided with-a-series-of perforations 39. The guides 36 are provided With perforations 40 thro-ugh which is passed a holding pin 41 which also passes through one of the holes 39, thereby locking the slidable chute 37 against a sliding movement. On the under side of the slidable chute 37 is secured a rack 42 which meshes with a pinion 43 on the shaft 44 which is operatedy by a crank 45, the rotation of which will cause the chute 37 to slide longitudinally.
Across the spout 35 is hinged the curved gate 46 on the shaft 47 which is operated.
by the hand lever 48. The bottom edge 49 of the gate 46 need not come in Contact with the bottom of the spout 35 in order to completely close same against'the flow of gravel from the compartment 17.
The tiltingV spout section consists of a curved rearmost portion 50 which merges into a somewhat smaller' foremost portion 51 and is integral therewith. The tilting spout section is provided with the bosses 52 through whose openings 53 pass the bolts 54 which alsorpass through thev openings 55 on the sliding spout section 3.7. TheY bolts 54 form the hinge connection for the tilting spout section. A hand lever 56 is attached to the tilting spout section at itsrearmost portion 50 by means of which its inclination can be varied to suitv requirements.v
There is also indicated the charging inlet 57 of a portable concrete mixer, and in dotted lines the position of' a similar charging inlet 58 of less height than the inlet 57, due either to a smaller capacit.7 or lower mounting for the mixer, and it is for the purpose of adapting the charger to varying heights of charging inlets 57 and 58 that this device has been constructed.
f Briefly reviewing the foregoing structure it will be seen to provide a charging hopper in which the outlet therefor can be inserted into the charging inlet of a mixer, and for the purpose of facilitating such insertion the outlet has been made movably longitudinal with the mixer, as well as laterally with relation thereto and vertically with relation thereto. The vertical adjustment is secured to either or both by a sliding aswell as a swinging movement. c
i The operation of the device is as follows: Assuming that a charge of aggregates occumerely move it out of the way without injuring same. The same result could of course be accomplished by means of a spring.
The spout 51 is then steered into the inlet opening 57 under the control of the lever 48, after which it is moved further into the inlet opening by the crank 45. The various ingredients from the compartments 17, 19 and 2O are then allowed to iow through the hopper outlet, under the complete control of the operator.
lThe exact manner of varying the controls will depend upon the proportions and conditions of the various ingredients being handled.
. `I claim:
pies the hopper 15 and it is desired to place same Within a portable mixer, the mixer is first backed up to the device (as shown in Figure 1 of theY drawings) and the spout v51 is moved into the charging inlet by one or all vof several movements. It is first aligned laterally and longitudinally by moving the hopper 15 on the wheels 12 and 13, first by means of the hand wheel 3G and second by manually moving the entire hopper to one side. In some cases it is desirable to provide a slight slope to the track members 10 so that if the truck should back into the spout it will